package com.feng.springboothelloworld.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object loginuser=request.getSession().getAttribute(
                "loginuser");
        if(loginuser==null){
            request.setAttribute("msg","请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return  false;
        }
        return true;
    }
}
